Rail drilling jig



Feb. 19, 1946. A. DE Moss 2,394,938 RAIL DRILLING JIG Filed July 15, 1943 2 Sheets-Sheet 1 I r Um n n L 1L ATTCIRNEYE &3 Y Alp De Moss, 74 Y f I INVENTOR. 7Z 92' 90' S 72 BY 65 T A. DE MOSS 2,394,988

'RAIL DRILLING JIG v Filed July 15, 1943 Feb. 19, 1946.

2 sheets-sheet 2 IN VEN TOR.

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Patented Feb. 19, 1946 UNITED STATES PATENT OFFICE 2,394,988 7 Y RAIL DRILLING JIG Alvy De Moss, Akron, Ohio Application July 15, 1943, Serial No. 494,832 I (01. 77- 11) Claims.

My invention relates to railjoints, and has among its objects and advantage the provision of an improved rail boring jig.

' 'Heretofore considerable difiiculty has been experienced in laying and repairing mine tracks.

In splicing rails, it has been customary to employ a drill supporting frame when boring holes in the rail sections.

gles to the vertical plane of the rail. To secure such alignment, it is necessary that the drill be properly aligned and supported during the drilling operation. Rock has been employed tosupport the drill mechanism. Much time is lost in searching for a rock which will hold the drilling mechanism at the properlevel. In many localities it is diiflcult to find a rock or other prop which will support the drilling mechanism in a correct position. Road bed conditions vary considerably so that no two conditions are alike.

Accordingly, an object of my invention is to provide a rail drilling jig which may be conveniently attached to the rail and adjusted to an accurate drilling position under variable working conditions, and in which the device constitutes a relatively small and lightweight unit which may be folded in a compact manner for carrying purposes.

In the accompanying drawings: Figure 1 is an elevational view illustrating th rail drilling jig in association with a rail to be drilled;

Figure 2 is a. top plan view;

Figure 3 is an end view;

Figure 4 is a sectional view taken along the line 4-4 ofrFigure 2;

Figure 5 is a view similar to Figure 4 but illustrating the jig in its folded condition; and

Figure 6 is a topview of the folded jig.

In the embodiment of the invention selected for illustration, I make use of a first jaw ID of hooklike formation engageable with the base flange I 2 of a rail l4. The jaw IOis formed at one end of a channel-like member [6. Slidably mounted on the member I6 i a second jaw I8 comprising plates 20 on opposite sides of the bight 22 of the member l6 and fixedly secured one to the other by rivets 24 extending loosely through a slot 26 in the bight22. One of the plates 2|] is bent to provide a flange 28 engageable over the opposite edge of the flange l2, with the bight 22 engaging the bottom face of the flange.

To the end 30 of the other plate 20 is connected one end of a tension spring 32 having its opposite end attached'to an eye 34 secured to the bight 22.

It is essential that the holes be drilled so that their axe are located at right an- Thus the spring 32 exerts a pull on the jaw l8 to bring the two jaws into firm connected relation ship with the rail flange l2. The slot 26 is of such length that the jaw l8 may be retracted sufliciently far to amply clear the rail flange I2.

The bight 22 is provided with a long slot 36 through which is loosely extended an arm 38 having an abutment plate 40 attached thereto, as by rivets 42. This arm is provided with a right angular extension 44 provided with a cross shaft 46 engageable underneath the bight 22, but of such length as to slide freely longitudinally of the member l6 and relatively to. the side flanges 48. A series of notches 50 is provided in the upper face of the bight 22 for selective reception of the latch end 52 on the abutment plate 48.

Figure 1 illustrates a drilling device 54 positioned with its drill 56 engaging the rail flange 58 to be drilled. This drilling device is old in the art and comprises a body 58 rotated through the medium of a ratchet handle 60 andincludes a pointed end 62 receivable in a locating recess 64 in the abutment plate 48. The drill 58 is rotated through manipulation of the handle l6 and the drill is advanced through the medium of a drill feed 66. Such drilling devices are old in the art and need not be described in further detail.

To support the member it in a proper horizontal position for aligning the drill 56, a supporting member 68 is connected with the member l6 for engaging the road bed 19. The member 58 is in the nature of a channel in cross section having short arms '!2 at one end-pivotally coni nected at 14 with the flanges 48 of the member It. To the flanges 16 of the member 68 is pivotally connected an eye piece 18, as at 80. This eye piece is hingedly connected at 82 with a latch bar 84 having notches 86 in its edges.

While the latch bar 84 ma be pivoted from the position of Figures 1 and 4 to that illustrated in Figure 5, the latch bar is restrained from pivotal movement relatively to the eye piece 18 in a clockwise direction beyond that illustrated in Figures 1 and 4. The notches 86 in the latch bar 84 are spaced to provide teeth 88 engageable underneath the bight 22 through positioning of the latch bar in a narrow slot 90 in the bight 22, This slotopens into a Wider slot 92 in the bight 22, which slot is Wider than the latch bar so that the latter may be moved longitudinally in the slot.

One end of a tension spring 94 is attached to a lug 96 on the hinge B2 and its other end attached to a lug 98 attached to the bight I 00 of the member 68. Thus the spring 94 holds the latch bar firmly in the slot 99. A cross pin I02 is attached to the flanges 48 to prevent the latch bar from being pivoted to a position outside the slot 92.

In operation, the jaws l and 18 are easily placed-in position on the rail flange l2. The abutment plate 40 is shifted for reception in one of th grooves 50 for supporting the drilling mechanism 54. The recess 64 is so located as to bring the axis of the drill '56 in parallelism with the member it when the point of the drill is accurately positioned on the rail fiange 58. The end of the member l6 remote from the rail M is effectively supported by reason of the member 68 and the latch bar 84. Thi bar is easily adjusted to variable road conditions to afford a suitable support for the bar 68.

For carrying purposes, the member 68 may be pivoted to lie adjacent the member [6 and the latch bar 84 folded to the position of Figure 5. The arm 38 and'the abutment plate 40 are also foldable to the position of Figure to provide a compact unit. With the latch bar -84 folded to the position of Figure 5, the eye piece 18 abuts the shoulders HM on the bight 22. A hook-shaped grip 106 is attached to the latch bar M to facilitate manipulation thereof, 7

Without further elaboration, the foregoing will so fully illustrate my invention, that others may,

by applying current knowledge, readily adapt the samefor use under various conditions of service I claim:

l. A track rail drilling jig comprising a first member having a jaw at one end thereof for engagement with one edge of the base flange of the rail, a second jaw slidably mounted on said first member and spring tensioned for engagement with the opposite edge of the base flange to connect the first member with the rail, a second member pivotally connected at one end with said first member engageable with the road bed to support the first member in a predetermined horizontal position, a latch fiange on said first member, a latch bar pivotally connected with said second member and having teeth selectivel engageable with said latch flange to latch the first and second members in different angular positions, resilient means acting on said latch bar and said second member to hold the latch bar in connected engagement with said latch flange, a drilling means abutment adjustably mounted on said first member. and means for latching the abutment to the first member in different spaced positions from the rail.

'2. The invention described in claim 1 wherein said first member is in the nature of a channel in cross section having a slot in its bight, said abutment having a right angular arm extending through said slot and provided with a pivot shaft located for engagement with the inner face of the bight, and in which said bight is provided with a series of notches for selective reception of a latch formation on said abutment, with said shaft located between said latch formation and said second jaw.

3. The invention described in claim 1 wherein said first member is in the nature of a channel in Cross section having a slot in its bight, said abutment having a right angular arm extending through said slot and provided with a pivot shaft located for engagement with the inner face of the bight, and in which said bight is provided with a series of notches for selective reception of a latch formation on said abutment, with said shaft located between said latch formation and said second jaw, a second slot in said bight, said second jaw comprising plates positioned on opposite sides of said bight, and a connection between said plates extending loosely through said second slot, and a spring acting on one of said plates and said first member to bias the second jaw against said base flange.

4. A support for a track rail drilling jig, comprising a base plate slotted throughout a portion of its length and formed with notches adjacent the slot, one end of the base plate formed with a jaw to engage the base flange of a rail,a second rail base flange engaging jaw slidably mounted on the base plate and means for normally urging the second jaw toward the first jaw, a supporting member pivotally attached at one end to the base plate adjacent the second jaw, the other end engaging the road bedbetween the ties, a toothed latch bar pivotally engaged at one end with the read bed engaging end of the supporting member and the teeth thereof adjustably engaging the base plate to position the supporting bar and support the base plate therefrom, said supporting bar and said latch bar being foldable substantially flat against the base plate when not in use, and a jig supporting bracket having an angular extension slidably engaged in slot of the base plate and engaging in the notches thereon to be adjustably supported thereon, said bracket being foldable to a position substantially parallel'with the base plate when not in use.

5. A support for a track rail drilling jig, comprising a base plate slotted throughout a portion of its length and formed with notches adjacent the slot, one end of the base plate formed with a jaw to engage the :base fiange'of a rail, a second rail base flange engaging jaw slidably mounted on the base plate and means for normally urging the second jaw towards the first jaw, a supporting member pivotallyattached at one end to the base plate adjacent the second jaw, the other end engaging the road bed between the ties, a latch bar pivotally engaged at one end with the road bed engaging end of the supporting member and adjustably engaging the base plate to position the supporting bar and support the base plate therefrom, and a jig supporting bracket having an angular extension slidably engaged in a slot of the base plate and engaging in the notches thereon to be adjustably supported thereon, said bracket being foldable to a position substantially parallel with the base plate when not in use.

ALVY DE MOSS. 

